I have started to code my project and I find very limited info on debugging so I moved to the platform.io IDE for my Arduino Uno. I am using an avr-debugger library but my project fails to build and gives the multiple definitions of __vector_18 or in attachInterrupt multiple definition of __vector_1 and im not sure why this is happening. All my code/build files on github at
Please post a link to that library. Does your project build if you don't use that library? Does your program build if you leave the below two lines out (maybe it's the library)